bolt vs. pump in a shotgun (using shot) theres really no difference in accuracy. That's pretty much all barrel and choke choice there. Where you will see an accuracy difference is in using a slug barrel. Bolt action sluggers such as the Savage 212 or the 220 (12 and 20 gauges) are highly accurate. Living here in Illinois has made me highly aware of what's being used and which are the better performers (Illinois is a shotgun only state) and those Savages are highly popular among the masses here. I myself prefer my TC Pro hunter setup. But I'm a single shot kinda guy when it comes to slug guns (I don't want to have to shoot them dang things more than once) but I USED to own a Mossburg 500 with a slugger barrel which was pretty accurate. Kept around an inch group at 100 with Lightfields and dropped deer on a regular basis. Pretty much all you could ask for out of a slugger I would imagine. You can get a combo for around 300-400 new and I'm sure there are several on sites such as Gunbroker and such.